Answer:
c. (y + z = 6) ⋅ −3
Step-by-step explanation:
We want to use elimination to eliminate y in a system of equations
y + z = 6
3y + 4z = 1
We can take the first equation and multiply by -3 to make the y term -3 so when we add the equations -3y + 3y =0
-3(y + z = 6)
3y + 4z = 1
--------------------
-3y -3z = -18
3y + 4z = 1
---------------------
0y +z = -17
Answer:
c. (y + z = 6) ⋅ -3
Explanation:
Equation P : y + z = 6
Equation Q : 3y + 4z = 1
In order to solve by elimination and remove the y-term, the coefficients of y must be same or negative to each other in both the equations.
So to make the y co-efficient similar here, multiply the first equation by -3
When done: (y + z = 6) · -3 = -3y - z = -18
Solving steps:
-3y - 3z = -18
3y + 4z = 1
------------------
z = -17
There the y-term has been removed.
A box has the shape of a rectangle or prism with height 28 cm. If the height is increased by 0.3 cm, by how much does the surface area of the box increase?
Answer:
4.5cm
Step-by-step explanation:
28cm+0.3cm=28.3cm
surface area=28.3cm×15cm=424.5cm
original surface area=28cm×15cm=420cm
different=424.5cm-420cm=4.5cm
PLS HELP WILL GIVE BRAINLIEST!!!: Researchers once surveyed students on which superpower they would most like to have. The following two-way table displays data for the sample of students who responded to the survey.
How many students in the survey chose to fly as their superpower?
______ students
Image here:
Answer:
38
Step-by-step explanation:
for this table, we can add up all of the students who chose flying (both the "male" and "female" students)
26 + 12 = 38
So, 38 students chose flying as their superpower.
hope this helps!!
does anyone know what the √2.25 is when rewritten as a fraction?
Answer: [tex]\sqrt{\frac{9}{4} }[/tex]
Step-by-step explanation:
This is what it is as a mixed number
[tex]\sqrt{2.25}[/tex]
= [tex]\sqrt{2\frac{1}{4} }[/tex]
= [tex]\sqrt{\frac{9}{4} }[/tex]
If you want it written in exponential form it would look like this:
[tex](\frac{9}{4}) ^{\frac{1}{2} }[/tex]
Answer:
1.5 in decimal and 3/2 or 1 1/2 in fraction
Step-by-step explanation:
hope this helps:)
Answer this. Show your work. Worth 10 points. Under 4 hours. URGENT.
NO LINKS OR FILES PLEASE!!!!!
The path of a race will be drawn on a coordinate grid like the one shown below. The starting point of the race will be at (−5.3, 1). The finishing point will be at (1, −5.3).
Part A: Use the grid to determine in which quadrants the starting point and the finishing point are located. Explain how you determined the locations. (6 points)
Part B: A checkpoint will be at (5.3, 1). In at least two sentences, describe the difference between the coordinates of the starting point and the checkpoint, and explain how the points are related. (4 points)
Answer:
Step-by-step explanation:
A: The starting point is located in Quadrant Q and the finishing point will be located in Quadrant S.
B: The checkpoint is in Quadrant P so it is in the middle of the course. The course will go from Quadrant Q to Quadrant S clockwise.
50 POINTS+brainliest but reposting again because my points were used last time: How do you graph a quadratic equation in vertex form when the equation is a perfect square? Use x² -4x+4 as an example
you will be reported if your answer is absurd
Answer:
If it is a perfect square, k=0 in the form y=a(x-h)^2+k.
Step-by-step explanation:
x^2-4x+4=(x-2)^2, meaning that the vertex is at the point (2,0).
Hope this helped :)
Translate the following phrase to a mathematical expression.
a number times fifteen
(A) 15 n
(B) 15 + n
(D) 15 ÷ n
(C) n15
Answer:
I think C
Step-by-step explanation:
A number times fifteen would be n • 15 or just n15.
The reason it is not 15n is because it asks a "number" which in this case is represented by the letter n. That letter is now multiplied (times) by 15. So therefore the number "n" times 15 is n15.
Please hit brainliest or thanks, it would help me out.
#Learnwithbrainly
Janice started watching TV at 8:53pm. She didn't turn off the television until 2:41am the next morning. How long was the TV on?
NO LINKS OR FILES PLEASE!!!
Jessica used Fraction 2 over 3 yard of fabric to make a scarf. Can she make 2 of these scarves with Fraction 1 and 3 over 4 yards of fabric, and why?
Yes, because the quotient of Fraction 1 and 3 over 4 ÷ fraction 2 over 3 is 2 and 5 over 8
No, because the quotient of Fraction 2 over 3 ÷ Fraction 1 and 3 over 4 is 1 and 2 over 12
No, because the quotient of Fraction 1 and 3 over 4 ÷ fraction 2 over 3 is 1 and 2 over 12
Yes, because the quotient of Fraction 2 over 3 ÷ Fraction 1 and 3 over 4 is 2 and 5 over 8
Answer:
I believe it is A
Mary's desk was 67.94 inches long, Joe's desk was 78.26 inches long and Troy's desk was x inches long. If the length of all the desks combined was 214.62 inches, how long was Troy's desk?
Answer:
68.42
Step-by-step explanation:
We know that when we add the lengths of all of the desks together, the total is 214.62. Based on that information, we can set up the following equation: 67.94 + 78.26 + x = 214.62. From there, all you have to do is add 67.94 + 78.26 to get 146.2. Lastly, you simply do 214.62 - 146.2 to get 68.42. Hope this helps!
Answer:
68.42
Step-by-step explanation:
We know that when we add the lengths of all of the desks together, the total is 214.62. Based on that information, we can set up the following equation: 67.94 + 78.26 + x = 214.62. From there, all you have to do is add 67.94 + 78.26 to get 146.2. Lastly, you simply do 214.62 - 146.2 to get 68.42. Hope this helps!
A rectangular-shaped dining room table is modeled by the figure given below. A) Write an equation to represent the area of the dining room table. B) If the the area of the table is 112 ft2, what are the dimensions of the dining room table?
Answer:
A) (x+10)(x+4) = ?
B) (x+10)(x+4) = 112, solve for x
Step-by-step explanation: you multiply the two equations to get the area.
Answer:
a)[tex](x^{2} +14x+40)ft^{2}[/tex]
b)14ft, 8ft
Step-by-step explanation:
a) Area of Rectangle = Length x Breadth
= [tex](x+10)(x+4)\\=x^{2} +4x+10x+40\\=(x^{2} +14x+40) ft^{2}[/tex]
b) Given Area of rectangle = [tex]112ft^{2}[/tex]
[tex]x^{2} +14x+40=112\\x^{2} +14x-72=0 (Quadratic Equation)\\\\[/tex]
Quadratic Equations: [tex]ax^{2} +bx+c = 0\\[/tex]
In this case, a = 1, b = 14, c = -72
[tex]\frac{-b+/-\sqrt{b^{2}-4ac } }{2a} \\= \frac{-14+/-\sqrt{14^{2} 4(1)(-72)} }{2(1)} \\= 4 or - 18 (reject)[/tex]
We reject negative values.
so x = 4,
The length of table = (x+10) ft = 4+10 = 14ft
The breadth of the table = (x+4) ft = 4 + 4 = 8ft
Answer this. Show your work. Worth 10 points. Under 4 hours. URGENT.
please answer fast!
If a certain measurement of a polygon is 283 in2, it means:
A. the polygon's measurements are 283 inches by 283 inches.
B. the polygon's volume is 283 in?
C. 283 one-inch by one-inch squares will fit over its surface.
D. none of the above.
Answer: C
Step-by-step explanation:
A says the polygon's measurements are 283 inches by 283 inches. Is it Correct? No. If we multiply these numbers we get 80,089 inches squared, which is not equal to our actual surface of 283 inches squared.
B says the polygon's volume is 283 inches cubed, which is not correct because it says that a certain measurement of a polygon is 283 inches squared, not cubed, which means we got a surface/area, not a volume.
C says that our 283 inches squared area could fit 283 one-inch by one-inch squares, which is correct because one-inch by one-inch is an one inch squared area, if we multiply this one-inch squared by the number 283, we get 283 inch squared area.
And D couldn't be because the answer is C.
Hope I Helped!
CORRECT ANSWERS ONLY PEEPS- this is 7th grade math on khan academy and if ur answer is incorrect, ill report yalll
Answer:
2
Step-by-step explanation:
proportional relationship: must be straight line and go through (0, 0).
[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]
[tex]\qquad \tt \rightarrow \: C. 2 [/tex]
____________________________________
[tex] \large \tt Solution \: : [/tex]
Proprtional relationship can be depicted as :
[tex]\qquad \tt \rightarrow \: y \propto x[/tex]
[ to get rid of proportionality sign, we use constant c ]
[tex]\qquad \tt \rightarrow \: y = cx[/tex]
Now, conclusion can be made that the shown equation represents a straight line.
And the graph has two straight lines, which means proportional relationship is shown by Two members
Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Taxable Income, Investments and Capital Gains Calculation
Will give brainliest to the person with the best answer and explanation
Answer:
Capital Gains
Capital gain calculation in four steps
Determine your basis.
Determine your realized amount.
Subtract your basis (what you paid) from the realized amount (how much you sold it for) to determine the difference.
Review the descriptions in the section below to know which tax rate may apply to your capital gains
TaxTo calculate the taxable gain on the sale of an asset, an individual takes the difference between the original purchase price and the sale price of the investment.
Mitch and Renae are sharing a large sub sandwich. Mitch ate 1/4 of the sandwich, and Renae ate 2/4 of the sandwich. How much of the sandwich did they eat altogether?
On the photo(screen shot)
*NEED IT BEFORE 11*
Step-by-step explanation:
√19 = 4.36
3√64 = 4
4.2
therefore the other from least to greatest will be
3√64, 4.2, √19
Please Help and Explain this like how do I calculate income tax and capital gain and investments
Answer: down below...
Step-by-step explanation:
Exercise 1:
Income = $83.465
Tax paid at 5.05% means, whatever your income is, you gotta pay 5.05% of it as a tax.
5.05% = [tex]\frac{5.05}{100}[/tex]
[tex]\frac{5.05}{100}*$83.465[/tex]
[tex]0.0505*$83.465[/tex]
If you do the calculations it should give you a $4,214.9825 tax
"Income tax paid at 9.15%"
[tex]\frac{9.15}{100}*83.465[/tex]
[tex]0.0915*83.465[/tex]
The 9.15% tax = $7,637.0475
"Total income tax paid"
This will just be the sum of the two taxes.
$4,214.9825+$7,637.0475 = $11,852.03 (sum of taxes)
Exercise 2:
Purchase price = $347.000
Selling price = $863.000
As you can see, they purchased the property for $347.000 and sold it for $863.000 which made them a lot of money in profit :)
That's what the Difference is.
Difference = $863.000-$347.000
Difference = $516,000
I don't really understand what capital gains are, because I'm 13, but I suppose I gotta calculate 50% of the profit that the banker has made.
[tex]\frac{50}{100}*$516.000[/tex]
[tex]\frac{5}{1}*$51.600[/tex]
[tex]5*$51.600[/tex]
"Capital gains" = $258,000
I don't really know if this is the correct answer for capital gains, but I am pretty sure I did well on the other ones.
Hope I helped you :] !
5[2(4) + 3 +4] in a verbal expression.
Answer:
2 multiplied by 4. Then add 3, and add 4. Then multiplied by 5.
Fadi starts studying at 3:30 p.m.
He studies for 50 minutes.
Then he plays for 30 minutes.
Complete the steps below to determine what time he finishes playing.
Fadi finishes studying at 4 : 20 and he finishes playing at 4 : 50.
What is Addition?Addition is one of the basic mathematical operations where two or more numbers is added to get a bigger number.
The process of doing addition is also called as finding the sum.
Given that Fadi starts studying at 3 : 30.
Length of studying was 50 minutes.
3 : 30 adding 50 minutes gives 4 : 20.
Hence he finishes studying at 4 : 20.
Fadi starts playing at 4 : 20.
Length of playing was 30 minutes.
4 : 20 adding 30 minutes gives 4 : 50.
Hence he finishes studying at 4 : 50.
Hence the end time of studying and playing is 4 : 20 and 4 : 50 respectively.
Learn more about Addition here :
https://brainly.com/question/29560851
#SPJ2
the ratio of cats and dogs at the city pound is 92 to 144.which statement descrbes this relationship?
Answer:
There are 23 cats for every 36 dogs at the city pound
Step-by-step explanation:
This means that for every group of 92 cats at the city compound there is a group of 144 dogs. So it also means that for every group of 23 cats there is a group of 36 dogs.
92 to 144 or 92/144 = 23/26 or 23 to 36
Hope This Helps OutAnswer:
8:12
around every 8(7.6)cats there will be 12 dogs
8th/9th-95 POINTS+BRAINLIEST!!!!!!!! How do you write a quadratic equation in vertex form? Please explain the steps in simple language and use y=x²+6x+16 as an example.
Answer:
In vertex form: y = 1(x - (-3))² + 7
Vertex: Minimum (-3, 7)
Explanation:
Vertex form: y = a(x - h)² + k
Completing square (rules) :
1st rule: (x + d)² = x² + 2dx + d² and (x - d)² = x² - 2dx + d²
2nd rule: x² + 2dx = (x + d)² - d² and x² - 2dx = (x - d)² - d²
Given equation:
y = x² + 6x + 16
y = x² + 2(3)x + 3² + 7
y = (x + 3)² + 7
Into vertex form:
y = 1(x - (-3))² + 7
From this identify:
a = 1, h = -3, k = 7
Solution, vertex of this equation: Minimum (-3, 7)
I need help quick!!!!
Answer:
Step-by-step explanation:
How do you find and identify parallel lines in Geometry? I'm going into 6th grade next year, and I am doing my summer homework. Please help!
Answer:
Parallel lines are lines that never touch each other
Step-by-step explanation:
they are straight and go on forever without intersecting (crossing)
Answer:
parallel lines are always the same distance apart from each other at all times, they never come in contact with one another
Step-by-step explanation:
They never intersect. It is difficult to explain, but you can look at examples on the internet. Hope this helps, have a good day, and good luck with your summer homework and good luck in 6th grade :)
The steps that Malcolm performed to simplify the expression
3.4
×
(
3.6
−
2.8
)
2
are shown.
Step
1
:
3.4
×
0.8
2
, determined by hand
Step
2
:
1.7
×
0.4
, determined by hand
Step
3
:
0.68
, determined using a calculator
Which statement is true?
Answer:
The answer should be 9 9/20
Step-by-step explanation:
You need to take the total volume of the regular box and multiply it by the downsize of 3/10 and that leaves you with 9.45.
8th grade 50 POINTS+BRAINLIEST: How do you graph a quadratic equation in vertex form when the equation is a perfect square? Use x² -4x+4 as an example
Answer:
(x - 2)² + 0
Step-by-step explanation:
Using x² - 4x + 4
(x² - 4x + 4)
x² - 4x + (-2)² - (-2)² + 4 (complete the square)
(x - 2)² - ( -2)² + 4 (use the binomial formula)
(x - 2)² + 0
Vertex point at (2,0)
Answer:
(x - 2)² + 0
Step-by-step explanation:
Step-by-step explanation:
Using x² - 4x + 4
(x² - 4x + 4)
x² - 4x + (-2)² - (-2)² + 4 (complete the square)
(x - 2)² - ( -2)² + 4 (use the binomial formula)
(x - 2)² + 0
Vertex point at (2,0)
What is the smallest prime divisor of 5^23+7^17?
Answer:
well, both numbers are odd, so their sum will be even.
2 is the smallest prime divisor.
If the rectangles above are boards for a tree house, which one uses the best
measurements?
A. Rectangle A
B. Rectangle B
C. Rectangle C
Answer:
option A
Explanation:
General measurement for a treehouse:
2.5 m × 2.5 m8 feet × 8 feet6' × 6'For best measurement, option A is correct.
In option B and C, the measurement is too small for the tree house.
15 points!!
What is the approximate surface area of this right prism with triangular bases?
A 200 ft. ²
B. 240 ft. ²
C. 394.2 ft. ²
D. 460.8 ft. ²
Answer:
b
Step-by-step explanation:
9x7.8x1/2x12
Answer:
C. 394.2 ft²
Explanation:
surface area of triangular prism: (a+ b + c) × length + base × height
Here given:
a = 9 ftb = 9 ftc = 9 ftbase = 9 ftlength = 12 ftheight = 7.8 ftApplying the formula:
(9+ 9 + 9) × 12 + 9 × 7.8394.2 ft²What is the surface area of this cylinder?
Use ≈ 3.14 and round your answer to the nearest hundredth.
_____ square meters.
Help
Answer:
3504.24 square meters
Step-by-step explanation:
You want the surface area of a cylinder of radius 18 m and height 13 m.
Surface areaThe surface area of a cylinder is given by the formula ...
A = 2πr(r +h)
A = 2(3.14)(18 m)(18 m +13 m) = 3504.24 m²
The surface area of the cylinder is about 3504.24 square meters.
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